Years ago I had a career where I needed to take responsibility for passing medications to my clients. I went through a certification program called TMA (trained medication administration) to give me the credentials to do so. I learned about NSAIDS ( non steroidal anti inflammatory) medication for pain relief. Generally speaking there’s a handful of OTC (over the counter) options. Each has drawbacks. Aspirin is bad for the stomach and can lead to ulcers. Ibuprofen is hard on kidneys. Acetaminophen (Tylenol) in excess is hard on the liver. Was it the kidney transplant team that told you to use Tylenol? Do they know about your liver condition? At 2 years post kidney transplant is the coordinator and team still actively following you? Can you inquire about your GFR and creatinine numbers?